-->

Haivision and Wowza Launch SRT Alliance for Low-Latency Streaming

Article Featured Image

With live streaming taking off in 2016, latency has become a central issue for the industry. To reduce latency as much as possible, video streaming companies Haivision and Wowza Media Systems are joining together to launch an open source version of SRT (Secure Reliable Transport), a full-stack video transport protocol. Created by Haivision, SRT is a technology package and protocol that connects two endpoints to deliver low-latency video across lossy networks. Haivision first demonstrated SRT at IBC 2012.

A full-stack solution is most beneficial with wide support behind it, and so the two companies have formed the SRT Alliance. Distributed under an LGPLv2.1 license, SRT's source code is available on GitHub, along with sample applications. Developers are free to use SRT and even make and upload improvements. In the coming weeks, the alliance will publish an open source SRT Governance Model to clarify how contributions are vetted and merged.

Working across the pipeline, SRT can be applied to encoders, streaming servers, decoders, set-top boxes, and video players. The two companies note that SRT includes end-to-end security with AES encryption, network health monitoring, and simplified firewall traversal. It works on closed or open networks, including the internet. While conditions will vary, SRT with one to two percent packet loss should deliver latency in the 500ms range.

"While catering to audio and video streams, SRT is content agnostic and operates at the network packet level reconstructing the real-time behavior of the data stream at the receiving end, surviving network packet loss, out-of-order packets, jitter, and fluctuating round-trip time while maintaining low latency," explains Adam Yellen, vice president of software platforms for Haivision. "On the protocol level, one advantage of SRT is its ability to multiplex control and multiple data substreams into a single established stream. This makes it a lot more IT-friendly in the real world because data flow is predictable and can be easily controlled and monitored at the network infrastructure level."

SRT is currently used by the Haivision product line, while Wowza will incorporate SRT into its products starting with the Wowza Streaming Engine. Going forward, both Haivision and Wowza will contribute to the SRT source code. The two companies will demonstrate the SRT protocol from a second floor suite at the Renaissance Hotel during the NAB Show, which starts today. 

Streaming Covers
Free
for qualified subscribers
Subscribe Now Current Issue Past Issues
Related Articles

Haivision Creates SRT Hub Partner Program and Launches SDK

Building off its NAB news, Haivision is creating a third-party vendor partner program for its SRT Hub platform, just in time for IBC.

Haivision Releases Makito X4 4K With 8 Core Encoding Engine

This latest upgrade has similar power requirements as the original model, yet promises a 16x increase in performance.

Microsoft Joins the SRT Alliance to Promote Low Latency Solution

With Microsoft's backing, Haivision hopes to grow global support for the standard. The SRT Alliance now counts over 140 member companies.

Wowza Adds Sub-Two Second Latency to Streaming Cloud Service

When seconds matter, even a little latency is too much. Wowza promises it can send a video stream around the globe in two seconds or less.

Latency: The Final Frontier for Streaming Video Entertainment?

Delays of up to two minutes can really destroy the live sports experience. Walled garden solutions aren't working, so it's up to CDNs to provide relief.

New Report from Wowza Evaluates Live Streaming Latency

The report, "Create the Streaming Media Experience Users Want," focuses on time to first frame and end-to-end latency in five markets: user-generated content, online gaming, sports, news, and radio.

Full Steam Ahead for Haivision's SRT-Optimized HEVC

The first commercial implementations of Haivision's HEVC encoding allied with the company's Secure Reliable Transport (SRT) protocol, are due in the new year

Companies and Suppliers Mentioned